SharpRSS/SharpRSS.Blazor/Components/Pages/Application/Login.razor

@page "/Auth/Login"
@using DotBased.ASP.Auth.Domains
@using DotBased.ASP.Auth.Services
@using SharpRSS.Blazor.Extensions

@inject NavigationManager NavigationManager
@inject SecurityService SecurityService
@inject ISnackbar Snackbar

<PageTitle>Login | SharpRSS</PageTitle>

<MudElement>
    <MudOverlay DarkBackground="true" Visible="true">
        <EditForm Model="@model" OnValidSubmit="ValidSubmit">
            <DataAnnotationsValidator/>
            <MudGrid>
                <MudItem>
                    <MudCard>
                        <MudCardHeader>
                            <MudText>SharpRSS login</MudText>
                        </MudCardHeader>
                        <MudCardContent>
                            <MudTextField Label="UserName" @bind-Value="model.UserName" For="@(() => model.UserName)"/>
                            <MudTextField Label="Password" @bind-Value="model.Password" For="@(() => model.Password)" InputType="InputType.Password"/>
                        </MudCardContent>
                        <MudCardActions>
                            <MudButton ButtonType="ButtonType.Submit" Variant="Variant.Filled" Color="Color.Primary">Login</MudButton>
                        </MudCardActions>
                    </MudCard>
                </MudItem>
            </MudGrid>
        </EditForm>
    </MudOverlay>
</MudElement>

@code {
    [CascadingParameter]
    private Task<AuthenticationState> AuthStateTask { get; set; } = null!;
    private string RedirectUrl { get; set; } = string.Empty;
    readonly LoginModel model = new();
    
    protected override async Task OnInitializedAsync()
    {
        RedirectUrl = NavigationManager.GetQueryParameters().TryGetValue("RedirectUrl", out var redirectUrl) ? redirectUrl.ToString() : NavigationManager.BaseUri;
        var authState = await AuthStateTask;
        if (authState.User.Identity is { IsAuthenticated: true })
            NavigationManager.NavigateTo(RedirectUrl, true);
    }

    private async void ValidSubmit(EditContext obj)
    {
        try
        {
            var loginResult = await SecurityService.LoginAsync(model);
            if (loginResult is { Success: true, Value: not null })
                NavigationManager.NavigateTo(RedirectUrl, true);
            Snackbar.Add(loginResult.Message, Severity.Error);
        }
        catch (Exception e)
        {
            Snackbar.Add(e.Message, Severity.Error);
        }
    }

}